Iowa State University

Hey, fitness junkies, here's something to ponder the next time you lace up your athletic shoes for that long, heart-pounding run: A Danish study recently concluded that high-intensity, high-mileage joggers die at the same rate as channel-surfing couch potatoes. The study, published Monday in the Journal of the American College of Cardiology, is the latest to confront the controversial topic of what constitutes too much exercise. Although previous research has found that physically active people have at least a 30% lower risk of death compared with inactive people, the ideal "dose" of exercise remains uncertain. Noting that the most famous - and perhaps apocryphal -...

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Hey, fitness junkies, here's something to ponder the next time you lace up your athletic shoes for that long, heart-pounding run: A Danish study recently concluded that high-intensity, high-mileage joggers die at the same rate as channel-surfing couch...

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